CN207611073U - A kind of optoelectronic switch break-make level sensitive circuit - Google Patents
A kind of optoelectronic switch break-make level sensitive circuit Download PDFInfo
- Publication number
- CN207611073U CN207611073U CN201721743857.8U CN201721743857U CN207611073U CN 207611073 U CN207611073 U CN 207611073U CN 201721743857 U CN201721743857 U CN 201721743857U CN 207611073 U CN207611073 U CN 207611073U
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- CN
- China
- Prior art keywords
- operational amplifier
- optoelectronic switch
- ground
- adjustable resistance
- level sensitive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a kind of optoelectronic switch break-make level sensitive circuit, including input signal Vi, output signal Vo1, Vo2, operational amplifier U1, U2, U3, U4, adjustable resistance R1, R2, R3, R4, power Vcc, ground, light emitting diode D1, D2, resistance R5, voltage-stabiliser tube D3.Power Vcc is positive 5V direct currents.The utility model optoelectronic switch break-make level sensitive circuit, the detection circuit is simple in structure, detection performance is stablized；Detection is improved by adjusting adjustable resistance accurately, is suitble to multichannel optoelectronic switch test fixture electric-control system；The function of detection circuit has expandability, can improve fixture design efficiency, shortens the production cycle, accelerates the exploitation of new product.
Description
Technical field
The utility model is related to detection circuit technical fields, and in particular to a kind of optoelectronic switch break-make level sensitive circuit.
Background technology
As electronic technology continues to develop, the appearance of electronics high-end product, electronic product gradually tends to miniaturization, complexity
Change, circuit board also tends to multilayer, high function and high density, therefore, work detected to it and proposes higher level requirement.
Test fixture is also known as testing jig, it is that the wiring board for welding electronic component is placed on the branch equipped with several testing needles
On frame, scheduled certain solder joints is allowed accurately to be in contact with testing needle, thus test line plate one is packed into fixture, electrical parameter is immediately
It can be shown by gauge outfit, fluorescent screen or number etc..Test fixture test is a kind of relatively conventional circuit board measuring method,
It is contacted with the component on wiring board using special needle bed test fixture, each node of assist side, which applies small voltage, to be come
Whether measurement circuit break-make, component are correctly installed.Due to needing for board design special needle bed-type fixture, this test side
Method is suitable for producing in enormous quantities the on-line testing of circuit board.Test for fixture control system, can main test fixture just
It is true according to Row control solenoid valve either on or off, to which test fixture is fixed and exited to product to be measured；Test fixture controls
Can system correctly send commencing signal to test system, the letter that can be returned according to test system feedback after test
It number is handled.Test fixture test speed is fast, but cost of manufacture is high, fabrication cycle is long；The knot of test fixture detection circuit
Structure is more complicated, circuit performance is unstable, circuit control is not accurately high.
Utility model content
(1) the technical issues of solving
The main purpose of the utility model is to overcome the defect problem of the above-mentioned prior art, the utility model to provide one
Kind optoelectronic switch break-make level sensitive circuit, the detection circuit is simple in structure, detection circuit performance is stable, detection circuit control
Enough accurate, detection circuit the functions of system have expandability.
(2) technical solution
In order to achieve the above object, the utility model is achieved by the following technical programs：
A kind of optoelectronic switch break-make level sensitive circuit, including input signal Vi, output signal Vo1, Vo2, operation amplifier
Device U1, U2, U3, U4, adjustable resistance R1, R2, R3, R4, power Vcc, ground, light emitting diode D1, D2, the input signal Vi point
It is not connected with the in-phase input end of the inverting input of operational amplifier U1 and operational amplifier U2, the same phase of operational amplifier U1
Input terminal is connected with the one end adjustable resistance R1, and the other both ends adjustable resistance R1 are connected with power Vcc and ground respectively, operational amplifier
The inverting input of U2 is connected with the one end adjustable resistance R2, and the other both ends adjustable resistance R2 are connected with power Vcc and ground respectively, transports
The output end for calculating amplifier U1, U2 is connected with output signal Vo1, and output signal Vo1 is connected to the ground by light emitting diode D1；It is defeated
Enter signal Vi to be also respectively connected with the in-phase input end of the inverting input of operational amplifier U4 and operational amplifier U3, operation is put
The in-phase input end of big device U4 is connected with the one end adjustable resistance R4, the other both ends adjustable resistance R4 respectively with power Vcc and phase
Even, the inverting input of operational amplifier U3 is connected with the one end adjustable resistance R3, the other both ends adjustable resistance R3 respectively with power supply
Vcc is connected with ground, and the output end of operational amplifier U3, U4 are connected with output signal Vo2, and output signal Vo2 passes through light-emitting diodes
Pipe D2 is connected to the ground.
Further, the both ends that described adjustable resistance R1, R2, R3, R4 are connected with operational amplifier and ground respectively parallel
There are capacitance C1, C2, C3, C4.
Further, described capacitance C1, C2, C3, C4 are 0.1uF ceramic condensers.
Further, the input signal Vi is grounded by resistance R1.
Further, the resistance R1 is 47k Ω.
Further, the both ends the resistance R1 and it is connected with voltage-stabiliser tube D3.
Further, described operational amplifier U1, U2, U3, U4 are operational amplifier LM139.
Further, the anode of the light emitting diode D1 is connected with output signal Vo1, the cathode of light emitting diode D1 with
Ground is connected.
Further, the anode of the light emitting diode D2 is connected with output signal Vo2, the cathode of light emitting diode D2 with
Ground is connected.
Further, the power Vcc is positive 5V direct currents.
(3) advantageous effect
The beneficial effects of the utility model：A kind of optoelectronic switch break-make level sensitive circuit, the detection circuit is simple in structure,
Detection performance is stablized；Detection is improved by adjusting adjustable resistance accurately, is suitble to multichannel optoelectronic switch test fixture electric-control system；Inspection
The function of slowdown monitoring circuit has expandability, can improve fixture design efficiency, shortens the production cycle, accelerates the exploitation of new product.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the utility model detection circuit schematic diagram.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts belong to
The range of the utility model protection.
In conjunction with Fig. 1, a kind of optoelectronic switch break-make level sensitive circuit, including input signal Vi, output signal Vo1, Vo2,
Operational amplifier U1, U2, U3, U4, adjustable resistance R1, R2, R3, R4, power Vcc, ground, light emitting diode D1, D2, resistance R5,
Voltage-stabiliser tube D3.Power Vcc is positive 5V direct currents.
Input signal Vi in-phase input end phases with the inverting input of operational amplifier U1 and operational amplifier U2 respectively
Even, the in-phase input end of operational amplifier U1 is connected with the one end adjustable resistance R1, the other both ends adjustable resistance R1 respectively with power supply
Vcc is connected with ground, and the inverting input of operational amplifier U2 is connected with the one end adjustable resistance R2, the other both ends adjustable resistance R2 point
It is not connected with power Vcc and ground, the output end of operational amplifier U1, U2 are connected with output signal Vo1, and output signal Vo1 passes through
Light emitting diode D1 is connected to the ground.Adjustable resistance R1, R2, it respectively parallels with the both ends being connected operational amplifier U1, U2 and ground
It is 0.1uF ceramic condensers to have capacitance C1, C2, capacitance C1, C2, and adjustable resistance R1, R2 are 100k Ω.Operational amplifier U1, U2 are
Operational amplifier LM139.The anode of light emitting diode D1 is connected with output signal Vo1, cathode and the ground phase of light emitting diode D1
Even.
Input signal Vi also in-phase input ends with the inverting input of operational amplifier U4 and operational amplifier U3 respectively
Be connected, the in-phase input end of operational amplifier U4 is connected with the one end adjustable resistance R4, the other both ends adjustable resistance R4 respectively with electricity
Source Vcc is connected with ground, and the inverting input of operational amplifier U3 is connected with the one end adjustable resistance R3, the other both ends adjustable resistance R3
It is connected respectively with power Vcc and ground, the output end of operational amplifier U3, U4 are connected with output signal Vo2, and output signal Vo2 is logical
Light emitting diode D2 is crossed to be connected to the ground.Adjustable resistance R3, R4, the both ends being connected with operational amplifier U3, U4 and ground difference are simultaneously
It is connected with capacitance C3, C4, capacitance C3, C4 are 0.1uF ceramic condensers, and adjustable resistance R3, R4 are 100k Ω.Operational amplifier U3, U4
For operational amplifier LM139.The anode of light emitting diode D2 is connected with output signal Vo2, cathode and the ground of light emitting diode D2
It is connected.
Input signal Vi is grounded by resistance R1, and resistance R1 is 47k Ω.The both ends resistance R1 are simultaneously connected with voltage-stabiliser tube D3, voltage stabilizing
The anode of pipe D3 is connected to the ground.
Operational amplifier U1, U2 and operational amplifier U3, U4 respectively constitute comparison circuit.Input signal Vi is in 0.1-
When 0.15V, output signal Vo1 exports high level, and light emitting diode D1 is bright, and light emitting diode D1 can be red diodes；It is defeated
Enter signal Vi in 2.8-3.3V, output signal Vo2 exports high level, and light emitting diode D2 is bright, and light emitting diode D2 can be
Green diode.
In conclusion the utility model optoelectronic switch break-make level sensitive circuit, the detection circuit is simple in structure, detection property
It can stablize；Detection is improved by adjusting adjustable resistance accurately, is suitble to multichannel optoelectronic switch test fixture electric-control system；Detection circuit
Function there is expandability, can improve fixture design efficiency, shorten the production cycle, accelerate the exploitation of new product.
Above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to aforementioned reality
Example is applied the utility model is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of optoelectronic switch break-make level sensitive circuit, it is characterised in that：Including input signal Vi, output signal Vo1, Vo2,
Operational amplifier U1, U2, U3, U4, adjustable resistance R1, R2, R3, R4, power Vcc, ground, light emitting diode D1, D2, the input
Signal Vi is connected with the in-phase input end of the inverting input of operational amplifier U1 and operational amplifier U2 respectively, operational amplifier
The in-phase input end of U1 is connected with the one end adjustable resistance R1, and the other both ends adjustable resistance R1 are connected with power Vcc and ground respectively, transports
The inverting input for calculating amplifier U2 is connected with the one end adjustable resistance R2, the other both ends adjustable resistance R2 respectively with power Vcc and
Ground is connected, and the output end of operational amplifier U1, U2 are connected with output signal Vo1, output signal Vo1 by light emitting diode D1 with
Ground is connected；Input signal Vi also in-phase input end phases with the inverting input of operational amplifier U4 and operational amplifier U3 respectively
Even, the in-phase input end of operational amplifier U4 is connected with the one end adjustable resistance R4, the other both ends adjustable resistance R4 respectively with power supply
Vcc is connected with ground, and the inverting input of operational amplifier U3 is connected with the one end adjustable resistance R3, the other both ends adjustable resistance R3 point
It is not connected with power Vcc and ground, the output end of operational amplifier U3, U4 are connected with output signal Vo2, and output signal Vo2 passes through
Light emitting diode D2 is connected to the ground.
2. a kind of optoelectronic switch break-make level sensitive circuit as described in claim 1, which is characterized in that the adjustable resistance
The both ends that R1, R2, R3, R4 are connected with operational amplifier and ground, which respectively parallel, capacitance C1, C2, C3, C4.
3. a kind of optoelectronic switch break-make level sensitive circuit as claimed in claim 2, which is characterized in that the capacitance C1, C2,
C3, C4 are 0.1uF ceramic condensers.
4. a kind of optoelectronic switch break-make level sensitive circuit as described in claim 1, which is characterized in that the input signal Vi
It is grounded by resistance R1.
5. a kind of optoelectronic switch break-make level sensitive circuit as claimed in claim 4, which is characterized in that the resistance R1 is
47kΩ。
6. a kind of optoelectronic switch break-make level sensitive circuit as claimed in claim 4, which is characterized in that the both ends the resistance R1
And it is connected with voltage-stabiliser tube D3.
7. a kind of optoelectronic switch break-make level sensitive circuit as described in claim 1, which is characterized in that the operational amplifier
U1, U2, U3, U4 are operational amplifier LM139.
8. a kind of optoelectronic switch break-make level sensitive circuit as described in claim 1, which is characterized in that the light emitting diode
The anode of D1 is connected with output signal Vo1, and the cathode of light emitting diode D1 is connected to the ground.
9. a kind of optoelectronic switch break-make level sensitive circuit as described in claim 1, which is characterized in that the light emitting diode
The anode of D2 is connected with output signal Vo2, and the cathode of light emitting diode D2 is connected to the ground.
10. a kind of optoelectronic switch break-make level sensitive circuit as described in claim 1, which is characterized in that the power Vcc is
Positive 5V direct currents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721743857.8U CN207611073U (en) | 2017-12-14 | 2017-12-14 | A kind of optoelectronic switch break-make level sensitive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721743857.8U CN207611073U (en) | 2017-12-14 | 2017-12-14 | A kind of optoelectronic switch break-make level sensitive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207611073U true CN207611073U (en) | 2018-07-13 |
Family
ID=62798343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721743857.8U Expired - Fee Related CN207611073U (en) | 2017-12-14 | 2017-12-14 | A kind of optoelectronic switch break-make level sensitive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207611073U (en) |
-
2017
- 2017-12-14 CN CN201721743857.8U patent/CN207611073U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 Termination date: 20181214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |